[lld] [llvm] [MC] Honour alignment directive fill value for non-intel (PR #100136)

[Jeremy Morse via llvm-commits]

jmorse wrote:

NB: we've noticed that this leads to different output binaries if you compile a C/C++ file and give clang `-via-file-asm`. It looks like x86 will usually use multi-byte-nops anyway, and this fix to the assembly parser causes the textual assembler to diverge from the built-in one.

I've uploaded #110134 to address this.

https://github.com/llvm/llvm-project/pull/100136